Development of transmon qubit with Sn based hybrid superconductor-semiconductor nanowire josephson junction with electrostatic gate control

ORAL

Abstract

Qubits with hybrid superconducting-semiconducting nanowires have garnered considerable interest since their first demonstration with Aluminum (Al) based gatemons. Tin (Sn) based hybrid superconductor-semiconductor nanowire josephson junctions show promise in further developing this electrostatic gate tunable transmon qubit platform with its larger induced superconducting gap [1] and high magnetic field compatibility [1] compared to Al. In this work we present our experimental progress on developing electrostatic gate tunable transmon qubit with these Sn based hybrid nanowire Josephson Junctions. With spectroscopic and time domain measurements we report on their performance in terms of coherence and gate tunable anharmonicity.



[1] M. Pendharkar., et al., Science 372, 508(2021)

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Presenters

  • Amrita Purkayastha

    • University of Pittsburgh

Authors

  • Amrita Purkayastha

    • University of Pittsburgh

  • Param J Patel

    • University of Pittsburgh

  • Azarin Zarassi

    • University of Southern California

  • Amritesh Sharma

    • University of Pittsburgh

  • Mihir Pendharkar

    • Stanford University

  • Connor P Dempsey

    • University of California Santa Barbara
    • University of California, Santa Barbara

  • Kun Zuo

    • University of Sydney

  • Chris J Palmstrom

    • University of California, Santa Barbara

  • Michael J Hatridge

    • University of Pittsburgh

  • Sergey M Frolov

    • University of Pittsburgh